I have been saving the master table files into my documents folder as TSM files quite successfully in the past.
But today I am unable to save any files?.
Sometimes I get a message this file with the same name exists do you want to overwrite it?, even though I know the file is not already saved in my documents folder as a TSM file. So I answer yes, then when I look the file is not there when I try to load it?.

Have I somehow corrupted my copy of the TSM software?.

When I was entering data into the the master table manually I realized that I had entered the same bet twice and I could not delete that row, maybe this is what corrupted my TSM software?.